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/*

 *  linux/fs/ext2/fsync.c

 *

 *  Copyright (C) 1993  Stephen Tweedie (sct@dcs.ed.ac.uk)

 *  from

 *  Copyright (C) 1992  Remy Card (card@masi.ibp.fr)

 *                      Laboratoire MASI - Institut Blaise Pascal

 *                      Universite Pierre et Marie Curie (Paris VI)

 *  from

 *  linux/fs/minix/truncate.c   Copyright (C) 1991, 1992  Linus Torvalds

 *

 *  ext2fs fsync primitive

 *

 *  Big-endian to little-endian byte-swapping/bitmaps by

 *        David S. Miller (davem@caip.rutgers.edu), 1995

 *

 *  Removed unnecessary code duplication for little endian machines

 *  and excessive __inline__s.

 *        Andi Kleen, 1997

 *

 * Major simplications and cleanup - we only need to do the metadata, because

 * we can depend on generic_block_fdatasync() to sync the data blocks.

 */

#include <linux/fs.h>

#include <linux/ext2_fs.h>

#include <linux/locks.h>

#include <linux/smp_lock.h>

/*

 *      File may be NULL when we are called. Perhaps we shouldn't

 *      even pass file to fsync ?

 */

int ext2_sync_file(struct file * file, struct dentry *dentry, int datasync)

{

        struct inode *inode = dentry->d_inode;

        return ext2_fsync_inode(inode, datasync);

}

int ext2_fsync_inode(struct inode *inode, int datasync)

{

        int err;

        err  = fsync_inode_buffers(inode);

        err |= fsync_inode_data_buffers(inode);

        if (!(inode->i_state & I_DIRTY))

                return err;

        if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))

                return err;

        err |= ext2_sync_inode(inode);

        return err ? -EIO : 0;

}